/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.googlecode.httl.test;

import java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.googlecode.httl.test.template.Books;

/**
 * JavaServlet
 * 
 * @author Liang Fei (liangfei0201 AT gmail DOT com)
 */
public class JavaServlet extends HttpServlet {
    
    private static final long serialVersionUID = 1L;

    private transient Books engine;
    
    @Override
    public void init() throws ServletException {
        this.engine = new Books();
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }
    
    @SuppressWarnings("unchecked")
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        Map<String, Object> context = new HashMap<String, Object>();
        Enumeration<String> e = request.getAttributeNames();
        while (e.hasMoreElements()) {
            String name = e.nextElement();
            context.put(name, request.getAttribute(name));
        }
        engine.render(context, response.getWriter());
    }

    protected String getTemplatePath(HttpServletRequest request)
            throws ServletException, IOException {
        String path = request.getPathInfo();
        if (path != null && path.length() > 0)
            return path;
        return request.getServletPath();
    }

}
